Parent versus student reporting of parental education drives contradictory gender patterns in achievement gradients
摘要
Research on how socioeconomic status (SES) and gender interact to affect student achievement has produced contradictory findings. Some studies suggest boys are more vulnerable to socioeconomic disadvantage; others find the opposite. This paper argues that these conflicting results stem from a methodological artifact: because boys report their parents’ education less accurately than girls do, the source of parental education data in large-scale assessments fundamentally shapes estimates of the SES–gender interaction. PISA 2006 and 2009 provide data on 151,269 fifteen-year-old students from 20 countries for whom both parent-reported and student-reported parental education were available. This within-subject design allowed a direct comparison of the parental-education–gender interaction in mathematics achievement, isolating the effect of the data source. The direction of the interaction systematically reverses depending on the data source. When using reliable parent-reported data, the parental-education gradient is steeper for boys in the majority of country-waves (18 of 31), consistent with the “vulnerable boys” hypothesis. In 12 of those 18 cases, the results reverse to indicate “vulnerable girls” when using the more commonly available student-reported proxy data. A sign test confirmed that the interaction estimate was more negative with student data in 28 of 31 country-waves (p < 0.001). The choice of data source is not a minor technical detail but a factor that can reverse conclusions about educational equity.